Princípio de Cachinhos Dourados

O princípio de Cachinhos Dourados é assim chamado por analogia à história infantil Cachinhos Dourados e os Três Ursos, em que uma garotinha chamada Cachinhos Dourados prova três pratos diferentes de mingau e prefere o mingau que não é nem muito quente nem muito frio, mas que tem a temperatura ideal. Como a história infantil é bem conhecida entre diferentes culturas, o conceito de "a quantidade ideal" é facilmente compreendido e aplicado em diversas áreas, incluindo psicologia do desenvolvimento, biologia, astronomia, economia e engenharia.

Aplicações

  • Em astrobiologia, a zona de Cachinhos Dourados refere-se à zona habitável em torno de uma estrela: como disse Stephen Hawking: “como Cachinhos Dourados, o desenvolvimento de vida inteligente requer que as temperaturas planetárias sejam 'ideais'”.[1] A hipótese da Terra Rara usa o princípio de Cachinhos Dourados com o argumento de que, para existir vida, um planeta não deve estar muito longe nem muito perto de uma estrela e do centro galático, enquanto ambos os extremos resultariam em um planeta incapaz de sustentá-la.[2] Esse tipo de planeta é coloquialmente chamado de "Planeta de Cachinhos Dourados”.[3][4] Paul Davies defendeu a ampliação do princípio para cobrir a seleção do nosso universo a partir de um multiverso (postulado): "observadores surgem apenas naqueles universos onde, como o mingau de Cachinhos Dourados, as coisas são acidentalmente 'ideais'".[5]
  • Em economia, o princípio de Cachinhos Dourados se refere a um crescimento econômico moderado e baixa inflação, o que permite uma política monetária favorável ao mercado.

Referências

  1. ↑ S Hawking, The Grand Design (London 2011) p. 194
  2. ↑ Weingroff, Marianne. "Activity 1 Teacher Guide: The Goldilocks Principle".
  3. ↑ Muir, Hazel (25 April 2007). "'Goldilocks' planet may be just right for life". New Scientist. Retrieved 2 April 2009.
  4. ↑ "The Goldilocks Planet". BBC Radio 4. 31 August 2005. Retrieved 2 April 2009.
  5. ↑ P Davies, ‘’The Goldilocks Enigma’’ (London 2006) p. 298

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